Published on in Vol 8, No 7 (2019): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12065, first published
.
1 Kaiser Permanente Southern California, Research and Evaluation, Pasadena, CA, United States
2 Kaiser Permanente, Department of Research and Evalutaion, Pasadena, CA, United States
3 Kaiser Permanente, Pediatrics, Los Angeles, CA, United States